Question

The $v-t$ graph for a particle is as shown. The distance travelled in the first four seconds is :

• A. $12m$
• B. $16m$
• C. $20m$
• D. $24m$

Answer 1

Answer: (B)

Distance is a scalar quantity.
Distance is defined as length of the path between two points.
In this case
Distance =Area of v -t graph in $4s$
= Area of triangle
$=\frac{1}{2}\text{ base }\times \text{ height }$
$=\frac{1}{2}\times 4\times 8=16m$